Home / 18,939.14-28,412.81-7,252.36

Finding the Fourth Proportional to 18,939.14, 28,412.81 and 7,252.36

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Solution

The fourth proportional to 18,939.14, 28,412.81 and 7,252.36 is: 10,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.14 : 28,412.81 = 7,252.36 : x
  2. Step 2: Convert to fraction form
    18,939.14/28,412.81 = 7,252.36/x
  3. Step 3: Cross multiply
    18,939.14x = 28,412.81 × 7,252.36
  4. Step 4: Simplify right side
    18,939.14x = 206,059,927.10
  5. Step 5: Solve for x
    x = 206,059,927.10/18,939.14
  6. Step 6: Final answer
    x = 10,880.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.